Machine eob dkillijstg metal



R. WILSON.

Metal Drili.

Patented Dec. 14,'1858.

UNITED STATES PATENT OFFICE,

ROBT. \V'IL'SON, OF MILTON, PENNSYLVANIA.

MACHINE FOR DRILLING METAL.

To all whom it may concern:

Be it known that 1, ROBERT VILSON, of Milton, in the county of Nort'humberland and State of Pennsylvania, have invented new and useful Improvements on a Machine for Drilling all Kinds of Metal; and I do declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1 is a perspective view, Fig. 2 sectional drawing of self pressure escapement, Fig. 3 sectional drawing of feed hand and stay springs with self ree' leva ti-n g escapements, Fig. 4c slide rod.

See drawing Fig. 1: A, base of bed plate; B,B,B, bed plate; (LC, cylinder in which hangs a weight; E, arm; D, box, in which runs the mandrel; F,F, pinion, on man drel; G, mandrel; H, coupling between the upper and lower mandrels I, G; 0,0, cylinder in which is a spiral spring; 0,0, pads to fasten cylinder on bed plate; R, box in which is a shaft S, crank T, handle 16,16, eye, slide which carries the changeable incline plane a; z,e, bolts which changes the plane by the octagon bur 3 ,1 00m, adjusting slide rod; m, reacting slide rod; 6,6, 6,6, pinch screws to keep slide rods to their places; P,P, pinion shaft; F, pinion which works in the rack \V, and shoves the slide on; a,a, turn pulley which turns the belt (Z,(Z,' 6,5, pulley on which runs the belt (Z,(Z, to which is fastened a weight, hanging in the cylinder (1,0; 2,2, pin on which hangs the turn pulley (0,0,; 3,3, a pin in slide to arrest motion of slide at a certain point; 4,4, tie bolt against which runs the pin 3,3; M, ratchet wheel; L, feed hand; H, spring acting on feed hand; I, head of screw regulating the self pressure escapement; 5, a swinging hanger; 6, shafton which hangs the escapements shown in Fig. 3; 7, lever; 8, spring; 9, sliding escapement working on a center pin 11, and acted upon. by the spring 8; 10, pin in slide rod mp0.

See sectional drawing of self pressure escapement Fig. 2: K, is the spring acting on feed hand L; I, head of screw regulating the self pressure escapement; 13,,the escapement; let, spring which prevents the escape Specification of Letters Patent No. 22,323, dated December 14., 1858.

m-ent from raising up; 12, involute which hangs in the horizontal shaft S, hid by the bevel wheel Q, in Fig. 1.

Fig. 3: Sectional drawing of feed hand and stay springs with self adjusting and self relevating escapements. Feed hand L; 21, 23, stay springs; 27, a pin running through the the bed plate and acted upon by the spring 24, which is fastened on the bed plate for the purpose of producing motion to the lever 18; 25, a plate on stay spring for lever l t), to act upon and throw off the feed 7, lever; 8, spring; 9, slide escap'ement.

Fig. 4: Slide rod :11, shown in Fig. 1; 26, tilt bar working on a pivot in its fastening in the slide rod, and the end of the tilt bar against the end of the lever 18, in Fig. 3.

1st. I construct a bed plate in any of the known forms say about 8 in. wide and about 36 in. high, to the upper end of which I attach adjustable incline plane for the purpose of increasing and reducing the feed, also the self acting feed escapement combined with the adjustable inclined plane for the purpose of throwing on and ofi the feed. 2nd. I also attach my safety adjustable self acting pressure escapement right over the involute and placed back against the bed plate for the purpose of saving the bit from harm or breakage.

This valuable improvement in hand or power drilling machines for all kinds of metal, is so arranged that when the crank shaft is turned the involute will produce motion in the feed hand which turns the ratchet wheel, and draws in the slide with the adjustable incline plane which shoves down the mandrel, and when the drill has run the desired depth the escapement will be acted upon by the slide rods and throw off the feed and re'ellevate for another hole. Self feeding and self relevating with means of changing with a thumb screw while running to suit any kind of metal and any sized bit. This self reelevating can be set in a moment to suit any given depth of hole within reach of its entire descent and also return to any height within its ascent. Then if the machine is kept running it will keep repeating this given descent and ascent until changed again. It has a safety adjustable self acting pressure escapement, so

that in case a bit breaks or becomes too dull thereby ceasing to cut, it will also cease to feed down the mandrell, thereby presenting the accumulation of the pressure from harm or breakage. This escapement is adjustable and can be changed in a moment to any pressure required, to suit any kind of metal and any sized bit that the machine is calculated to stand.

The effect of screw S, Fig. 2, is that when the screw S is turned to the right that draws piece 13 through which the screw S works farther out over the involute 12, thereby preventing the feed hand L, from taking so strong a hold on the involute, so'reverse the screw to the left and it will set piece 13 back and allow it to take a stronger hold.

I do not claim the self feeding of a hand or power drilling machine with a ratchet wheel. having a feed hand worked by an involute or scroll on the driving shaft, nor do I claim a self feeding and self reacting drilling machine, for these principles were in use before my application, nor do I claim anything in a table on which to lay the metal to be operated upon. Therefore I do not describe or show a table at all using any of the known forms which may best suit the work to be laid thereon, but

lVhat I do claim and desire to secure by Letters Patent is 1. The adjustable inclined plane for the purpose of increasing and decreasing the feed of a hand or power drilling machine, for all kinds of metal.

2. I claim the peculiar construction of the self acting feed escapenient combined with the adjustable inclined plane for the purpose of throwing off and on the feed to suit any depth of hole within its entire descent, and then return again only to the heighth required within its ascent.

3. I claim the adjustable bearing against which the lower end of the feed hand rests in combination with the involute or scroll,

and the feed hand which works upon it for the purpose of producing a safety adjustable self acting pressure escapement all substantially in the manner and for the pur- 

